. >> even president obama supports marriage for the nation's gays and lesbians and his administration has filed a brief an their behalf with the supreme court. >> if we are successful and we prevail and no lower court rulings are reversed and proposition 8 goes away. that will be our goal. we will have reached our objective. it will also send a message to the rest of the country. >> but it will not change the minds of critics like bill may, who campaigned on behalf of prop 8. >> it's not about same-sex marriage, it's about the question of whether marriage should be redefined to eliminate the only institution that has kids with moms and dads. >> we aren't trying to redefine marriage, we are trying to have access to marriage. that's what it is about. equal access to an institution that clearly the american society holds dear. >> the berkeley couple, parents of four sons, say they feel a sense of honor and responsibility for their role in this historic case. it's unclear if the justices will rule narrowly just on california or make a 50-state decision. both sides are optimistic. >> we ar